Piccardi
{{PatentInfo |Inventor=Jozsef Laszlo Biro |Assignee=Eversharp Inc. |Country=US |ApplicationNum=537255 |ApplicationDate=1944-05-25 |PatentNum=2491082 |PatentDate=1947-09-09 |PriorityDate=1944-04-29 |Titolo=Mechanical ink pencil |Marca=Eversharp |Descriz...